Pitman.



No. 634,205. Patentw det. 3,1899.'

(Application med No'v. '12, 1898.5

(N0:Mndel.)

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" whichserves to,hold theballs in place.

Fiumi? D'IEHL l AUFRIDRICLI oF' ELIZABETH, New JERSEY,

' AssIeNoRs TorTHESINGERMANUFAGTURING1-COMPANY, or NiiwfL `JnRsEY-- 1 `'This invention liasffor, its objecttoprovide.

@HOvl bellbeeriner rime@ 1.0i. ksi-1111 1eQ011-r struction :fpr use in' sewing-machine stands mi forfoiheixpurposesa 'rod or barone en'dloflwhich provided with a strapA on which is preferablyforlned one part of the pitinan ball-race, the other part off the pitranball-race beingormed on an adjustable. ring or cap which has a 'screw,

threaded engagement-with the strap and To prevent lateral movernentor` displacement of the pittnan in operation, the crank in coilnection with which thepitman is to operate is Y preferably ,providedwith an annular groove; which forms the crank ball-race.

desiredbe made oil-retainin g and dust-proof, as by thezuse of felt or other washers applied in any suitable or well-known manner.. For connection to a treadle lthe lower end ofthe pitman'isprovidedwith a ball, formin'g part of' an adjustable ball-and-socketv joint, preferably'comprising an oi1pocket,i`n which the' ballendlof the pitlnan is held bya cup-screw,V

which may be adjusted to take up wear. v

Tn the accompanying drawings, Figure 1 is a sectional elevation oflthe improved pitman and connecting parts, and Fig. 2 is a view at right angles to Fig. l with the crank in section and the ball-retaining ring or cap removed.

Referring to the drawings, A denotes a rod or bar forming the body of the pitman, pro.

vided at itsflowerend with a ball a.

Bis a strap consisting, preferably, of an internally-threaded steel rin g,the central opening'in which is greater in diameter than the crank, so that in assembling the parts the pitman-strap maybe readily passed over the thiclan annular recess or grodv .irplsiicaqitnfitiNoventa12,1898?serinlnaegazzos (Np man.)

` 'i cranlfg, The inhterir of rthe ring or strapjhas a concavedqi' beveled pa'rt?,,termin g a: portion BE the race'forthej circular'seriesoffballs d,

which are retainedinplacebythe sa idpringa.;

' or cap. To afford a'- strong screwcoune@tion-A t y erably; f ofrmegidn the said strapo side of the `ball-race partthereoftoreceive afg. lip orifiange'c'rof the screwfthreladedring V@an C. 1, 2 E is'fa crank adapted; for useginal sewmg-- orN pulley'l (not 1shown) is t6" be fatliiemgthis! crankhavingat itsfcentral portionfan annuf;Y

lar groove e, forningpar't of Athelrace forthfe' Aballs"d,'said groove preventing lateral dis;A w The ball-" l" bearingrstrap portion of the pitma r1'may,'iifassembled, Vas'will be understood'.

- `l`F denotes a part of a treadle provided with cupfto receive the ball a on the rod or bar A,

the-interior oisaid cupbein g adapted to servev placement of the pitman lwhen the partsare So Y as an bil-pocket as .well as a socket; forthe ball d. .The ball a on therod orbar A `inthe cup f by a cup-screwg, havingasrew-- threaded connection with the Acup f andpro-r man to swing back and-forth as the'cranl; E rotates. The cup screw g can be turned down when necessary to take up any wear of the ball-and-socket joint formed by the ball a, the pocket in the cup f, and th'ecu'pscrew g, While any wear of the ball-bearing vided with flaring sides, which allow the pitat the upper end of the pitman can be readily IOO l-Iaving thus described our invention, we elaiin and desire to secure by Letters Patent- 1. In a pitman, the combination with a pitman rod or bar, of a strap at one end thereof and on the inner port-ion of which is formed a part of aball-raee, said strap being provided witli an annular groove out-side of said ballrace part, a ring or cap having a screw-threaded connection with said strap and provided with a portion of a ball-race and with an annular iiange or lip extending into said annular groove in said strap, and a series of balls between said cap and strap.

2. The Combination with a crank having an annular groove, of a pitman rod or bar, a strap at one end of said pitman rod or bar and on the inner portion of which strap is formed a part of a ball-race, said strap being provided with an annular groove outside of said ball-race part, a ring or cap having a screw-threaded connection with said strap and provided with a portion of a ball-race and with an annular iiange or lip extending into said annular groove in said strap, and a series of balls between said oap, strap and Crank.

3. The combination of a crank having an annular groove, of a pitrnan rod or bar provided at its lower end with a ball a, a strap at the upper end of said pitlnan rod or bar and on the inner portion of which strap is formed a part of a ball-race, said strap being provided with an annular groove outside of said ball-race part, a ring or cap having a screw-threaded connection with said strap and provided with a portion of aball-raee and with an annular flange or lip extending into said annular groove in said strap, a series of balls between said cap, strap and crank, a horizontal treadle part having an oil eup or pocket, and means for securing the lower end of said pitman in said oil cup or pocket.

In testimony whereof we aflix our signatures in the presence of two witnesses.

PHILIP DIEHL. FRIEDERIGHA MULLER.

Witnesses:

HENRY CALVEE, HENRY J. MILLER. 

